What is this site?

HTML5Labs is where Microsoft prototypes early and unstable
specifications from web standards bodies such as W3C. Sharing these
prototypes helps us have informed discussions with developer
communities, and enables us to provide better feedback on draft
specifications based on this implementation experience. To find out
more about HTML5Labs, read the
blog by Jean Paoli, President, Microsoft Open
Technologies, Inc.

Web Standard Prototypes

MS Open Tech is releasing a prototype implementation of the ORTC
API spec published by the W3C ORTC Community Group. This
implementation demonstrates an easily implementable API that is
consistent with the principles for a WebRTC API that Microsoft has
been advocating for the past year.

This new CU-RTC-Web prototype continues our exploration of
alternatives to the SDP Offer/Answer approach. The CU-RTC-Web
approach is based on two basic principles: that JavaScript APIs for
real time communications should not be based on passing
under-specified SDP blobs and should not require implementation of
the SDP Offer/Answer state machine. These principles, first
articulated in the original CU-RTC-Web proposal have continued as
basic tenets within our prototyping efforts, which have
demonstrated the practicality of the approach with running
code.

With our latest prototype, we are demonstrating another
important interoperability scenario - roaming between two different
connections (e.g. Wi-Fi and 3G, or Wi-Fi and Ethernet) - with
negligible impact on the user experience. The simple, flexible,
expressive APIs underlying the CU-RTC-Web architecture allowed us
to implement this important scenario without introducing any
changes in the spec, just by building the appropriate JavaScript
code.

Microsoft Open Technologies, Inc. and the Microsoft Corp. IE
teams have been working with our colleagues across the industry,
engaging developers to test and provide feedback on the Pointer
Events specification, and incorporating all the received feedback
into this Last Call Working Draft. To demonstrate cross-browser
interoperability for Pointer Events, we are releasing an updated
version of the patch for Webkit originally posted in December.

In support of our earlier contribution to the W3C
WebRTC Working Group, Microsoft Open Technologies, Inc., (MS Open
Tech) is now publishing a working prototype implementation of the
CU-RTC-Web proposal to demonstrate a real world interoperability
scenario - in this interop case, voice chatting between Chrome on a
Mac and IE10 on Windows via the API.

As part of the HTTP/2.0 effort, the industry
is collaborating to reinforce Internet communication security
in the IETF Transport Layer Security Working Group (TLS WG). Two security experts from Cisco and
Microsoft have submitted ALPN-01 (Application Layer Protocol
Negotiation), a safer and simpler application protocol negotiation
approach, backed up by a new HTML5 Labs HTTP/2.0 prototype by Microsoft Open
Technologies, Inc. incorporating an initial implementation of
ALPN-01.

Through our continuing support of the HTTP/2.0 standardization
through code, we have made some updates to our prototypes. We have
moved from the Node.js implementation used server-side by our
earlier prototypes to a modified implementation of an existing
Apache module for which we are making available in the associated
patch.

This prototype is an implementation of the W3C
DeviceOrientation Event Specification draft on HTML5Labs.com. This
specification defines new DOM events that provide information about
the physical orientation and motion of a device. Such APIs will let
web developers easily deliver advanced web user experiences
leveraging modern devices sensors.